Mixedbreed
New member
With the archoil you know what it is made of and what it contains. The ar9100 works better and will lower your engine oil temp a couple of degrees at the same time. Plus it's not as expensive.
I agree to a point, but just knowing what is in it doesnt make you feel better when you put it in the engine and it doesnt do anything.
but i must have engine isues that it wont touch. honestly i have to admit that.